package gummachine.state;

import java.io.Serializable;

/**
 * gummachine.state interface
 * @author yuanml
 */
public interface State extends Serializable {
    /**
     * insert quarter
     */
    void insertQuarter();

    /**
     * eject quarter
     */
    void ejectQuarter();

    /**
     * turn crank
     */
    void turnCrank();

    /**
     * dispense
     */
    void dispense();
}
